Well, I am a biologist, and alcohol is a poor, very poor
sanitizing  agent. But it is a good cleaning agent.. The best sanitation is
a 1:10  chlorox:water mix, but I have not idea what that will do to
your  harps...now the good news is that bacteria need a substrate to
multiply  on.... your key should be to keep you harps clean of the mucus
that  build up and and food particles and anything sugary (if you
drink  regular soft drinks, sugar in your coffee, etc)... The sugar
based  contaminants would be the most serious problems. The bacteria
are  always present, you breathe them in all the time.. the trick is not
to  provide them a medium to multiply on... Bacteria, though would be
the  least of my worries, the virus risks is far most serious on
sharing  harps... again cleanliness is the key...I have used  the
efferedent trick, the alcohol, and the hydrogen peroxide method... as  far
as cleaning i cant tell... may be a good research project for
my  students.....
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